/**
 * Main App Layout Styles (Refined)
 * Professional Design - Minimalist & Sophisticated
 * Supports Light & Dark Modes
 */

/* ============================================
   NAVIGATION BAR
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 72px;
    background-color: rgba(255, 255, 255, 0.7);
    border-bottom: 1px solid var(--color-border);
    z-index: var(--z-fixed);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
}

@media (prefers-color-scheme: dark) {
    .navbar {
        background-color: rgba(15, 23, 42, 0.7);
    }
}

.navbar-container {
    max-width: 1200px;
    height: 100%;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-logo {
    font-size: 1.75rem;
    font-weight: 900;
    letter-spacing: -0.06em;
    color: var(--brand-logo, var(--brand-primary));
    text-shadow: 0 10px 20px rgba(15, 118, 110, 0.18);
}

.navbar-search {
    position: relative;
    flex: 0 1 320px;
}

.navbar-search-input {
    width: 100%;
    padding: 0.625rem 1rem 0.625rem 2.75rem;
    font-size: var(--font-size-sm);
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.navbar-search-input:focus {
    outline: none;
    background-color: var(--color-bg-card);
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 4px var(--brand-primary-light);
}

/* Search Dropdown (Instagram-like) */
.search-dropdown {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    max-height: 480px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-modal);
    overflow: hidden;
    display: none;
    flex-direction: column;
}

.search-dropdown:not([hidden]) {
    display: flex;
}

.search-results-list {
    overflow-y: auto;
    padding: var(--spacing-xs) 0;
}

.search-result-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    transition: all var(--transition-fast);
}

.search-result-item:hover {
    background-color: var(--color-bg-alt);
}

.search-result-image {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    overflow: hidden;
    flex-shrink: 0;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border-light);
}

.search-result-image.book {
    border-radius: var(--radius-sm);
}

.search-result-info {
    flex: 1;
    min-width: 0;
}

.search-result-title {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-result-subtitle {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-dropdown-footer {
    padding: var(--spacing-sm);
    border-top: 1px solid var(--color-border-light);
    text-align: center;
    background: var(--color-bg-alt);
}

.search-dropdown-footer a {
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--brand-primary);
}

.search-dropdown-empty {
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

/* ============================================
   MODALS (Instagram-style)
   ============================================ */

.modal-backdrop {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: none; /* Changed from flex to none */
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    padding: var(--spacing-md);
}

.modal-backdrop:not([hidden]) {
    display: flex; /* Show only when not hidden */
    animation: fadeInModal 0.2s ease-out;
}

@keyframes fadeInModal {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-card {
    background-color: var(--color-bg-card);
    width: 100%;
    max-width: 500px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    position: relative;
    animation: slideUpModal 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes slideUpModal {
    from { transform: translateY(20px) scale(0.95); opacity: 0; }
    to { transform: translateY(0) scale(1); opacity: 1; }
}

.modal-header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header .font-bold {
    flex: 1;
    text-align: center;
    font-size: var(--font-size-base);
}

.modal-close {
    font-size: 1.5rem;
    line-height: 1;
    color: var(--color-text-muted);
    padding: 4px;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    position: absolute;
    right: 12px;
}

.modal-close:hover {
    background-color: var(--color-bg-alt);
    color: var(--color-text);
}

.modal-body {
    padding: var(--spacing-lg);
}

/* Likes modal */
.likes-list {
    max-height: 420px;
    overflow: auto;
}

.likes-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--color-border-light);
}

.likes-item:last-child {
    border-bottom: none;
}

.likes-item .meta {
    min-width: 0;
}

.likes-item .name {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.likes-item .sub {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.likes-empty {
    padding: 20px 16px;
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.modal-close-left {
    position: absolute;
    left: 12px;
    color: var(--color-text);
    padding: 8px;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.modal-close-left:hover {
    background-color: var(--color-bg-alt);
}

.post-share-btn {
    position: absolute;
    right: 16px;
    color: var(--brand-primary);
    font-weight: 700;
    font-size: var(--font-size-sm);
}

.post-share-btn:hover {
    color: var(--brand-primary-hover);
}

.post-preview-container {
    position: relative;
    width: 100%;
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border-light);
    border-bottom: 1px solid var(--color-border-light);
    max-height: 400px;
    overflow: hidden;
}

.post-preview-container img,
.post-preview-container video {
    width: 100%;
    height: auto;
    display: block;
}

.remove-preview-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    z-index: 10;
}

.remove-preview-btn:hover {
    background: rgba(0, 0, 0, 0.9);
}

/* Utils for Modal */
.p-4 { padding: 1rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.pb-4 { padding-bottom: 1rem; }
.p-3 { padding: 0.75rem; }
.m-3 { margin: 0.75rem; }
.border-top { border-top: 1px solid var(--color-border-light); }
.font-medium { font-weight: 500; }



.navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.navbar-nav-item {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-lg);
    color: var(--color-text-light);
    transition: all var(--transition-base);
}

.navbar-nav-item:hover {
    background-color: var(--brand-primary-light);
    color: var(--brand-primary);
    transform: translateY(-2px);
}

.navbar-nav-icon {
    width: 24px;
    height: 24px;
    stroke-width: 2;
}

.navbar-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 700;
    color: white;
    background-color: var(--brand-danger);
    border-radius: var(--radius-full);
    border: 2px solid var(--color-bg-card);
}

/* ============================================
   MAIN LAYOUT
   ============================================ */

.main-layout {
    padding-top: 72px;
    min-height: 100vh;
}

.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-md);
}

.main-grid {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: var(--spacing-2xl);
}

.main-content {
    min-width: 0;
}

.main-sidebar {
    position: sticky;
    top: 96px;
    height: fit-content;
}

/* ============================================
   FEED & POSTS
   ============================================ */

.feed-post {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.feed-post:hover {
    box-shadow: var(--shadow-lg);
}

.post-header {
    display: flex;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-md);
}

.post-user {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.post-username {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
}

.post-time {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.post-menu-btn {
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.post-menu-btn:hover {
    color: var(--color-text);
}

.post-media {
    width: 100%;
    background-color: var(--color-bg-alt);
    overflow: hidden;
    border-top: 1px solid var(--color-border-light);
    border-bottom: 1px solid var(--color-border-light);
}

.post-media img,
.post-media video {
    width: 100%;
    height: auto;
    max-height: 700px;
    object-fit: contain;
    background: #000;
}

.post-media-carousel {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    gap: 0;
}

.post-media-carousel::-webkit-scrollbar {
    height: 6px;
}

.post-media-carousel::-webkit-scrollbar-thumb {
    background: rgba(100, 116, 139, 0.3);
    border-radius: 999px;
}

.post-media-item {
    flex: 0 0 100%;
    scroll-snap-align: center;
}

.post-actions {
    display: flex;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    gap: var(--spacing-md);
}

.post-action-btn {
    color: var(--color-text-light);
    transition: all var(--transition-base);
    padding: 8px;
    border-radius: var(--radius-md);
}

.post-action-btn:hover {
    color: var(--brand-primary);
    background-color: var(--brand-primary-light);
    transform: translateY(-2px);
}

.post-action-icon {
    width: 24px;
    height: 24px;
}

.post-likes {
    padding: 0 var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 700;
}

.post-content {
    padding: var(--spacing-sm) var(--spacing-md);
}

.post-text {
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.post-text .username {
    font-weight: 700;
    margin-right: 0.5rem;
}

.post-comments-link {
    padding: 0 var(--spacing-md) var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.post-add-comment {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    border-top: 1px solid var(--color-border-light);
    gap: var(--spacing-md);
}

.post-add-comment input {
    flex: 1;
    border: none;
    outline: none;
    font-size: var(--font-size-sm);
    background: transparent;
    color: var(--color-text);
}

.post-comment-btn {
    color: var(--brand-primary);
    font-weight: 700;
    font-size: var(--font-size-sm);
}

.post-comment-btn:disabled {
    opacity: 0.3;
}

/* ============================================
   CREATE POST
   ============================================ */

.create-post-card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

/* Inline composer */
.composer-shell {
    background: var(--color-bg-card);
    border-radius: inherit;
    padding: var(--spacing-lg);
}

.composer-top {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.composer-input-wrap { flex: 1; }

.composer-textarea {
    width: 100%;
    border: 1px solid var(--color-border);
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    padding: 12px 14px;
    font-size: var(--font-size-sm);
    color: var(--color-text);
    resize: none;
    min-height: 46px;
    line-height: 1.4;
}

.composer-textarea:focus {
    outline: none;
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 4px var(--brand-primary-light);
    background: var(--color-bg-card);
}

.composer-preview {
    margin-top: var(--spacing-md);
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border-light);
    max-height: 420px; /* Instagram/X benzeri daha kompakt önizleme */
}

.composer-preview img,
.composer-preview video {
    width: 100%;
    height: 100%;
    display: block;
    max-height: 420px;
    object-fit: cover;
}

#inlinePreviewInner {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 8px;
}

#inlinePreviewInner img,
#inlinePreviewInner video {
    width: 100%;
    height: 100%;
    max-height: 240px;
    object-fit: cover;
    border-radius: var(--radius-md);
}

.composer-actions {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.composer-left { display: flex; align-items: center; gap: 10px; }

.composer-icon-btn {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--brand-primary);
    transition: all var(--transition-fast);
}

.composer-icon-btn:hover {
    background: var(--brand-primary-light);
    transform: translateY(-1px);
}

/* Action sheet (Instagram-like) */
.sheet-card {
    width: min(520px, calc(100vw - 28px));
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    padding: 10px;
    max-height: 80vh;
    overflow: hidden;
    animation: slideUpModal 200ms ease-out;
}

.sheet-handle {
    width: 52px;
    height: 6px;
    background: rgba(100, 116, 139, 0.25);
    border-radius: 999px;
    margin: 6px auto 10px;
}

.sheet-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sheet-btn {
    width: 100%;
    border-radius: var(--radius-lg);
    padding: 12px 14px;
    font-weight: 700;
    border: 1px solid var(--color-border-light);
    background: var(--color-bg-alt);
    color: var(--color-text);
    text-align: center;
}

.sheet-link {
    display: block;
    width: 100%;
    border-radius: var(--radius-lg);
    padding: 12px 14px;
    font-weight: 700;
    border: 1px solid var(--color-border-light);
    background: var(--color-bg-alt);
    color: var(--color-text);
    text-align: center;
}

.sheet-link.danger {
    color: var(--brand-danger);
    background: rgba(239, 68, 68, 0.08);
    border-color: rgba(239, 68, 68, 0.18);
}

.sheet-btn.danger {
    color: var(--brand-danger);
    background: rgba(239, 68, 68, 0.08);
    border-color: rgba(239, 68, 68, 0.18);
}

.sheet-btn.primary {
    color: var(--brand-primary);
    background: var(--brand-primary-light);
    border-color: rgba(99, 102, 241, 0.25);
}

.sheet-cancel {
    width: 100%;
    margin-top: 10px;
    border-radius: var(--radius-lg);
    padding: 12px 14px;
    font-weight: 800;
    border: 1px solid var(--color-border);
    background: var(--color-bg-card);
}

/* Share suggestions (Instagram-like row) */
.share-suggestions {
    display: flex;
    gap: 14px;
    overflow-x: auto;
    padding: 6px 2px;
}

.share-suggestions::-webkit-scrollbar { height: 6px; }
.share-suggestions::-webkit-scrollbar-thumb { background: rgba(100,116,139,.25); border-radius: 999px; }

.share-suggestion {
    width: 86px;
    flex: 0 0 auto;
    text-align: center;
    color: var(--color-text);
}

.share-suggestion .avatar {
    width: 64px;
    height: 64px;
    margin: 0 auto;
    border: 2px solid var(--brand-primary-light);
    padding: 2px;
    border-radius: 999px;
    background: var(--color-bg-card);
}

.share-suggestion .avatar img {
    width: 100%;
    height: 100%;
    border-radius: 999px;
    object-fit: cover;
}

.share-suggestion .name {
    margin-top: 8px;
    font-size: 12px;
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.create-post-form {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.create-post-input {
    flex: 1;
    padding: 0.75rem 1.25rem;
    background-color: var(--color-bg-alt);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.create-post-input:hover {
    background-color: var(--color-border);
}

.create-post-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border-light);
}

.create-post-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-light);
    transition: all var(--transition-fast);
}

.create-post-btn:hover {
    background-color: var(--color-bg-alt);
    color: var(--brand-primary);
}

/* ============================================
   SIDEBAR
   ============================================ */

.sidebar-profile {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    background: var(--color-bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.sidebar-section {
    background: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    margin-top: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.sidebar-profile-info {
    flex: 1;
}

.sidebar-profile-username {
    display: block;
    font-weight: 700;
    color: var(--color-text);
    font-size: var(--font-size-sm);
}

.sidebar-profile-name {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.sidebar-section-title {
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.sidebar-user-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.sidebar-user-info {
    flex: 1;
    min-width: 0;
}

.sidebar-user-username {
    display: block;
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-meta {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.sidebar-follow-btn {
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--brand-primary);
}

.sidebar-footer {
    margin-top: var(--spacing-2xl);
    font-size: 0.7rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* Comment items (Instagram/X style) */
.comment-item {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    align-items: flex-start;
}

.comment-content {
    flex: 1;
    min-width: 0;
}

.comment-text {
    font-size: 14px;
    color: var(--color-text);
    line-height: 1.4;
    word-wrap: break-word;
}

.comment-text .username {
    font-weight: 700;
    margin-right: 6px;
}

.comment-meta {
    font-size: 12px;
    color: var(--color-text-muted);
    margin-top: 4px;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 1024px) {
    .main-grid {
        grid-template-columns: 1fr;
    }
    .main-sidebar {
        display: none;
    }
}

@media (max-width: 640px) {
    .main-container {
        padding: var(--spacing-md) 0;
    }
    .feed-post, .create-post-card {
        border-radius: 0;
        border-left: none;
        border-right: none;
    }
    .navbar {
        position: fixed;
        top: auto;
        bottom: 0;
        height: calc(64px + env(safe-area-inset-bottom));
        padding-bottom: env(safe-area-inset-bottom);
        border-bottom: none;
        border-top: 1px solid var(--color-border);
        box-shadow: 0 -6px 18px rgba(15, 23, 42, 0.08);
    }
    .main-layout {
        padding-top: var(--spacing-md);
        padding-bottom: calc(72px + env(safe-area-inset-bottom));
    }
    .navbar-container {
        gap: 0;
        justify-content: center;
    }
    .navbar-logo,
    .navbar-search {
        display: none;
    }
    .navbar-nav {
        width: 100%;
        justify-content: space-around;
        gap: 0;
    }
    .navbar-nav-item {
        width: 46px;
        height: 46px;
    }
    .mobile-only { display: flex; }
    .desktop-only { display: none; }
}

.mobile-only { display: none; }